Aminopropyl Functionalised MCM-41: Synthesis and Application for Adsorption of Pb(II) and Cd(II)
Joint Authors
Bach, Long Giang
Quang Khieu, Dinh
Tinh, Mai Xuan
Du, Pham Dinh
Hieu, Nguyen Trung
To, Thuy Chau
Xuan Mau, Tran
Source
Advances in Materials Science and Engineering
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-15, 15 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-02-19
Country of Publication
Egypt
No. of Pages
15
Abstract EN
This paper shows a comparison of porous properties of aminopropyl-MCM-41 materials functionalised via the direct and indirect methods.
The obtained materials were characterised using X-ray powder diffraction (XRD), transmission electron microscopy (TEM), thermogravimetric analysis-differential scanning calorimeter (TGA-DSC), adsorption/desorption isotherms of nitrogen, and Fourier-transfer infrared (FT-IR) spectroscopy.
The results showed that the direct method provided the aminopropyl-MCM-41 material with well-ordered pores and high surface areas but with a lower quantity of grafted 3-aminopropyltriethoxysilane than the indirect method.
To remove the organic template in the indirect method, solvent extraction with HCl/C2H5OH and calcination at 500°C were used, and the former gave a higher quantity of grafted 3-aminopropyltriethoxysilane in the resulting aminopropyl-MCM-41 materials.
The experimental data were applied to the isotherm models of adsorption including Langmuir, Freundlich, Redlich–Peterson, and Sips either in the linear or nonlinear form.
In order to avoid the bias of the determination coefficient and the error function method, the paired-samples t-test as an alternative method was first proposed to look for the most appropriate adsorption isotherms.
The maximum adsorption capacity of Cd(II) and Pb(II) was 14.08 mg·g−1 and 64.21 mg·g−1, respectively.
The mechanism of complexation and isoelectric interaction was suggested to explain the adsorption of Pb(II) and Cd(II) from aqueous solutions on aminopropyl functionalised MCM-41 in the range of pH from 2 to 9.
American Psychological Association (APA)
Du, Pham Dinh& Hieu, Nguyen Trung& To, Thuy Chau& Bach, Long Giang& Tinh, Mai Xuan& Xuan Mau, Tran…[et al.]. 2019. Aminopropyl Functionalised MCM-41: Synthesis and Application for Adsorption of Pb(II) and Cd(II). Advances in Materials Science and Engineering،Vol. 2019, no. 2019, pp.1-15.
https://search.emarefa.net/detail/BIM-1121039
Modern Language Association (MLA)
Du, Pham Dinh…[et al.]. Aminopropyl Functionalised MCM-41: Synthesis and Application for Adsorption of Pb(II) and Cd(II). Advances in Materials Science and Engineering No. 2019 (2019), pp.1-15.
https://search.emarefa.net/detail/BIM-1121039
American Medical Association (AMA)
Du, Pham Dinh& Hieu, Nguyen Trung& To, Thuy Chau& Bach, Long Giang& Tinh, Mai Xuan& Xuan Mau, Tran…[et al.]. Aminopropyl Functionalised MCM-41: Synthesis and Application for Adsorption of Pb(II) and Cd(II). Advances in Materials Science and Engineering. 2019. Vol. 2019, no. 2019, pp.1-15.
https://search.emarefa.net/detail/BIM-1121039
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1121039